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			<h1>Rwanda Education Commons</h1>
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		<p><span class="title">Mathematics Senior 4, Introduction to Exponents</span>, 2010, <cite>Rwanda Education Commons</cite></p>
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<h2>TEACHER'S GUIDE: Senior 4</h2>

<h3>TOPIC 1: NUMBER AND NUMBER RELATIONSHIP</h3>
<h3>Subtopic 1: Exponents</h3>
<h3>Video: Exponents</h3>

<h4>Description</h4>
<p>This series reinforces the use of exponents as a short way to repeated multiplication. The laws are used to simplify exponential expression. In this lesson there is a revision of notion and rules learnt in previous level: primary 6 and senior 1. 
  
<h4>Orientation</h4>
<p>This lesson should be taught in senior 4</p>

<h4>Educational approach or Methodology</h4>
<p>There are ten lessons in this series. Throughout the series, we use the concept that powers are simply repeated multiplication.</p>
<p>Learners are often expected to apply laws without first having a chance to understand why the laws are true. To address this problem, we have taken an educational approach that allows the learners to discover the laws for themselves. When investigating the laws of exponents, we continue to use repeated multiplication as the tool.</p>
<p>We develop the concepts first, and then apply them. The first lesson uses some practical examples to develop a physical understanding of powers. In the next four lessons we investigate examples that help us to establish the laws for exponents. We then assess the learner's understanding of the laws learnt so far. Using factorization of prime numbers, we do further investigations and learn how to simplify expressions. In the last lesson we assess the content that has been covered in the series.</p>
<p>The task given at the end of each video lesson has been designed to extend learners beyond the theory covered in the lesson. We suggest that you provide further exercises from textbooks for learners to practice calculating with exponents.</p>
<p>To get the full benefit of the lessons, your learners need to engage actively with the concepts presented. So, when you preview the videos, think about how to introduce each lesson and what follow up activities will be useful. Also watch out for places in the video where you can pause to have a class discussion, or ask learners to complete an activity or solve a problem posed in the video.</p>
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